openwebrx-clone/owrx/__main__.py

import logging

# the linter will complain about this, but the logging must be configured before importing all the other modules
# loglevel will be adjusted later, INFO is just for the startup
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)

from http.server import HTTPServer
from owrx.http import RequestHandler
from owrx.config.core import CoreConfig
from owrx.config import Config
from owrx.config.commands import MigrateCommand
from owrx.feature import FeatureDetector
from owrx.sdr import SdrService
from socketserver import ThreadingMixIn
from owrx.service import Services
from owrx.websocket import WebSocketConnection
from owrx.reporting import ReportingEngine
from owrx.version import openwebrx_version
from owrx.audio.queue import DecoderQueue
from owrx.admin import add_admin_parser, run_admin_action
import signal
import argparse


class ThreadedHttpServer(ThreadingMixIn, HTTPServer):
    pass


class SignalException(Exception):
    pass


def handleSignal(sig, frame):
    raise SignalException("Received Signal {sig}".format(sig=sig))


def main():
    parser = argparse.ArgumentParser(description="OpenWebRX - Open Source SDR Web App for Everyone!")
    parser.add_argument("-v", "--version", action="store_true", help="Show the software version")
    parser.add_argument("--debug", action="store_true", help="Set loglevel to DEBUG")

    moduleparser = parser.add_subparsers(title="Modules", dest="module")
    adminparser = moduleparser.add_parser("admin", help="Administration actions")
    add_admin_parser(adminparser)

    configparser = moduleparser.add_parser("config", help="Configuration actions")
    configcommandparser = configparser.add_subparsers(title="Commands", dest="command")

    migrateparser = configcommandparser.add_parser("migrate", help="Migrate configuration files")
    migrateparser.set_defaults(cls=MigrateCommand)

    args = parser.parse_args()

    if args.version:
        print("OpenWebRX version {version}".format(version=openwebrx_version))
        return 0

    if args.module == "admin":
        return run_admin_action(adminparser, args)

    if args.module == "config":
        return run_admin_action(configparser, args)

    return start_receiver(loglevel=logging.DEBUG if args.debug else None)


def start_receiver(loglevel=None):
    print(
        """

OpenWebRX - Open Source SDR Web App for Everyone!  | for license see LICENSE file in the package
_________________________________________________________________________________________________

Author contact info:    Jakob Ketterl, DD5JFK <dd5jfk@darc.de>
Documentation:          https://github.com/jketterl/openwebrx/wiki
Support and info:       https://groups.io/g/openwebrx

    """
    )

    logger.info("OpenWebRX version {0} starting up...".format(openwebrx_version))

    for sig in [signal.SIGINT, signal.SIGTERM]:
        signal.signal(sig, handleSignal)

    # config warmup
    Config.validateConfig()
    coreConfig = CoreConfig()

    # passed loglevel takes priority (used for the --debug argument)
    logging.getLogger().setLevel(coreConfig.get_log_level() if loglevel is None else loglevel)

    featureDetector = FeatureDetector()
    failed = featureDetector.get_failed_requirements("core")
    if failed:
        logger.error(
            "you are missing required dependencies to run openwebrx. "
            "please check that the following core requirements are installed and up to date: %s",
            ", ".join(failed)
        )
        for f in failed:
            description = featureDetector.get_requirement_description(f)
            if description:
                logger.error("description for %s:\n%s", f, description)
        return 1

    # Get error messages about unknown / unavailable features as soon as possible
    # start up "always-on" sources right away
    SdrService.getAllSources()

    Services.start()

    try:
        server = ThreadedHttpServer(("0.0.0.0", coreConfig.get_web_port()), RequestHandler)
        server.serve_forever()
    except SignalException:
        pass

    WebSocketConnection.closeAll()
    Services.stop()
    SdrService.stopAllSources()
    ReportingEngine.stopAll()
    DecoderQueue.stopAll()

    return 0